Ophthalmic-mounting-adjusting device



F. A. STEVENS.

OPHTHALMIC MOUNTING ADJUSTING DEVICE.

APPLICATION FILED APR. 1. 1919.

I m wm Jfi/ZJ Willi/IAN Will/I Patented July 19,1921,

UNITED stares PATENT orrics.

FREDERICK A. STEVENS, OF PROVIDENCE, RHODE ISLAND, ASSIGNOR TO STEVENS AND COMPANY, INCORPORATED, A CORPORATION OF RHODE ISLAND.

OPHTHALMIC-MOONTING-ADJUSTING DEVICE.

To all w ham it may concern:

Be it known that I, FREDERICK A; STE- VENS, citizen of the United States, residing at Providence, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements. in Ophthalmic Mounting Adjusting Devices, of which the following is a specification.

My device relates to a new article of manufacture for adjusting. mountings.

It is frequently necessary to vary the angle of the temples relatively to the plane of the lenses to accommodate the same to the face of the particular wearer. To determine the desired degree of this angle it has been customary to use a test frame and thereafter, before mounting the lenses, to manually twist the end piece by guess to approximately the required angle, and then insert the lenses. If the result was not satisfactory the lenses had to be detached and the end piece againangled. Were any torsional bending of the end piece attempted when the lenses were attached the strain would fracture the lenses; and the bending operation even, in the absence of lenses could not be made with accuracy without undue labor.

The essential objects of my invention are to prevent distortion or injury of the arms and ears; to enable the torsional bending of the end piece while the lenses are engaged without danger of breaking the lenses; to

attain the required angle exactly and with-.

out experiment; and to; attain these ends in a simply operated and inexpensive structure.

To the above ends essentially my invention consists in such parts and in such combinations of parts as fall within the scope of the appended claims.

In the accompanying drawings which form a part of this specification- Figures 1 and 2, are front and side elevations respectively of my novel device,

Fig. 3, a section on line 3-3 of Fig. 1,

Fig. 4, an enlarged front elevation of the frame with a spectacle mounting engaged therein,

Fig. 5, a section of the same on line 5-5 of Fig. 4, showing a portion of a pair of pliers in perspective, and

Fig. 6, a reduced front elevation of a modified form of frame.

Like reference characters indicate like parts throughout the views.

Specification of Letters Patent.

ophthalmic hly device. in its present and preferred form of embodiment comprises a heavy base or tandard Swith a reduced top portion 9 having a bifurcation 10 in which is fixed in any convenient manner a substantially flat vertically disposed open frame 12. In detail the frame comprises in a single integral plate, a base portion 13 radial or outwardly frame. In the portion 13 of the frame in 'alinement with the graduation 20 is a vertical slot 23 extending from the opening 22 to the medial portion of a horizontal slot or opening 25. cavity or slot 23. The slots rected fingers 28. The fingers and the portions 29 of the frame immediately below the lingers are preferably transversely curved to afford a curved seat or bearing face 30.

My device is used as follows. A lens 32 has attached thereto in the usual manner by a screw 33 the straps 34 and arms 35 of a post or end piece 36 carrying in its bifurcated portion or ears 37 in which is fixed by a screw 38, a temple 39. The edge of the lens is placed against the curved area 30 of the frame 12 with the arms 35 seated in the slot 25 and with the straps 34 extending into the slots 23 and 26. The end piece portion 36 projects through the slot 25. By pliers ll or other suitable implement the portion 37 is grasped and turned to one side by a torsional movement as shown in Fig. 5. This movement is continued until the tem le 39 comes into alinement with the particular graduation 19 which indicates the degree of angle sought in this particular case, as shown in Fig. 4-. It will be noted that during the torsional bending the arms 35 are seated firmly and rigidly held by the material bounding the slot so that no tilting of the arms occurs, and no strain whatever is transmitted to the lens 32, and no strain extends toward the lens beyond the portion 36.

It will be further noted that by means of the scale any predetermined degree of 26 in continuation of the slot 23' and 25 form inwardly di-- Patented July 19, 1921. Y

. Application rueaa rn 7, 1919. Serial No. 288,211.

inclined arms or sides 15,4111Cl a transverse. .or top portion 16 connect ng the upper ends Centrally of the slot 25 is a 1. In an optical adjusting device, the coin- I bination of a base, and a frame on the base provided with an opening and with an 0blong slot adjacent to the opening, there be- "ing inwardlydirected fingers with spaced ends intermediate the opening and the slot,

the space between the finger ends intersecting said slot. V

2. In an optical adjusting device, the combination of a base, and a frame on the base having an opening and provided with a slot extending from the opening, and with anobloiig slot communicating at its medial portion with the first slot and at right angles to the first slot, and with a cavity extending "from the oblong slot in alinenient with the j 3. In an opticaladjustingdevice the combination with'the base, of a frame onthe base provided with an opening and with an oblong slot adjaoent to the opening, and inwardly directed oppositely disposed spa'eed fingers on the frame, thespa'cebetween-the fingers extending'from the opening to the slot, said frame and' fingers being provided W al, ing a seat;

ateral concave depression constitut- 4. In an optical adjusting device, the combination of a base, a frame on the base pro v ed w t n Opening and with; oblo g slot adjacent the opening, there being" inwardly directed fingers with spaced ends, the space betweenft'the fingers extending from the opening to the slot and a graduated scale. on the frame above the fingers.

5. In an optieal adjusting device, a base, a frame on the" base provided with an opening and with an oblong slot adjacent the opening, there being inwardly directed fin-,

gers with spaced ends between the opening and the slot, the space between said ends communicating with said slot, therebeing a scale on the frame for cooperating with a posiit'lplledi Ed e y" a d slot and finger;

5. In an optical adjusting device, a base, all aim supported thereby; an arched po tion at the upper endof said arm",=a"portion at the lower end of said arm having a T- shap'ed slot the axis" of one member thereof extending in the ldireetion of the central point ofsaid "arched portion; V an'opt cal ad usting device, a base,

"and ,open frame on the base provided with slots angularly disposed with relation to each other, there being ascale the central 9mm; of which is vertical alinenient With h ef' aid glIn testimony whereof I have aflixed'my sesami ni nii aioicii. sTEvENs. 

